From: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Date: Mon, 3 Oct 2011 11:56:26 +0000 (+0530)
Subject: ath6kl: Avoid processing failed rx packets
X-Git-Tag: firefly_0821_release~3680^2~2381^2~57^2~287^2~349
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=99f54299b973fd436dd9b4b1dd638c16f3d3deb4;p=firefly-linux-kernel-4.4.55.git

ath6kl: Avoid processing failed rx packets

It is not necessary to process an htc_packet which is allocated for rx
but failed in sdio rx. Though it does not fix any real issue, it does
not make much sense to process the failed frame.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
---

diff --git a/drivers/net/wireless/ath/ath6kl/htc.c b/drivers/net/wireless/ath/ath6kl/htc.c
index 4a03dacd9208..ca3d08462181 100644
--- a/drivers/net/wireless/ath/ath6kl/htc.c
+++ b/drivers/net/wireless/ath/ath6kl/htc.c
@@ -1687,11 +1687,15 @@ static int ath6kl_htc_rx_fetch(struct htc_target *target,
 	int fetched_pkts;
 	bool part_bundle = false;
 	int status = 0;
+	struct list_head tmp_rxq;
+	struct htc_packet *packet, *tmp_pkt;
 
 	/* now go fetch the list of HTC packets */
 	while (!list_empty(rx_pktq)) {
 		fetched_pkts = 0;
 
+		INIT_LIST_HEAD(&tmp_rxq);
+
 		if (target->rx_bndl_enable && (get_queue_depth(rx_pktq) > 1)) {
 			/*
 			 * There are enough packets to attempt a
@@ -1699,18 +1703,19 @@ static int ath6kl_htc_rx_fetch(struct htc_target *target,
 			 * allowed.
 			 */
 			status = ath6kl_htc_rx_bundle(target, rx_pktq,
-						      comp_pktq,
+						      &tmp_rxq,
 						      &fetched_pkts,
 						      part_bundle);
 			if (status)
-				return status;
+				goto fail_rx;
 
 			if (!list_empty(rx_pktq))
 				part_bundle = true;
+
+			list_splice_tail_init(&tmp_rxq, comp_pktq);
 		}
 
 		if (!fetched_pkts) {
-			struct htc_packet *packet;
 
 			packet = list_first_entry(rx_pktq, struct htc_packet,
 						   list);
@@ -1730,13 +1735,37 @@ static int ath6kl_htc_rx_fetch(struct htc_target *target,
 			/* go fetch the packet */
 			status = ath6kl_htc_rx_packet(target, packet,
 						      packet->act_len);
+
+			list_move_tail(&packet->list, &tmp_rxq);
+
 			if (status)
-				return status;
+				goto fail_rx;
 
-			list_move_tail(&packet->list, comp_pktq);
+			list_splice_tail_init(&tmp_rxq, comp_pktq);
 		}
 	}
 
+	return 0;
+
+fail_rx:
+
+	/*
+	 * Cleanup any packets we allocated but didn't use to
+	 * actually fetch any packets.
+	 */
+
+	list_for_each_entry_safe(packet, tmp_pkt, rx_pktq, list) {
+		list_del(&packet->list);
+		htc_reclaim_rxbuf(target, packet,
+				&target->endpoint[packet->endpoint]);
+	}
+
+	list_for_each_entry_safe(packet, tmp_pkt, &tmp_rxq, list) {
+		list_del(&packet->list);
+		htc_reclaim_rxbuf(target, packet,
+				&target->endpoint[packet->endpoint]);
+	}
+
 	return status;
 }
 
@@ -1826,15 +1855,6 @@ int ath6kl_htc_rxmsg_pending_handler(struct htc_target *target,
 	if (status) {
 		ath6kl_err("failed to get pending recv messages: %d\n",
 			   status);
-		/*
-		 * Cleanup any packets we allocated but didn't use to
-		 * actually fetch any packets.
-		 */
-		list_for_each_entry_safe(packets, tmp_pkt, &rx_pktq, list) {
-			list_del(&packets->list);
-			htc_reclaim_rxbuf(target, packets,
-					&target->endpoint[packets->endpoint]);
-		}
 
 		/* cleanup any packets in sync completion queue */
 		list_for_each_entry_safe(packets, tmp_pkt, &comp_pktq, list) {